Ceiling fan



FIG. 1 is a front/right/bottom perspective view of a ceiling fan;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines on the drawing depict portions of the ceiling fan that form no part of the claimed design. 

CLAIM I claim the ornamental design for a ceiling fan, as shown and described. 